EAF reduction period

In the traditional smelting process, the existence of the reduction period shows the characteristics of EAF steelmaking. The main difference of modern EAF smelting process is that the reduction period is moved outside the furnace.
The main tasks of the reduction period:
Deoxidation to the requirement---- deoxidation;
Desulfurization to a certain value----desulfurization;
Adjust composition----alloying;
Adjust the temperature----adjust the temperature.
Among them: deoxidation is the core, temperature is the condition, and slag forming is the guarantee.